Remember Scantron? How did that work, and did you really have to use a Number 2 Pencil?Support me on Patreon! https://www.patreon.com/c/simonretroOr tip me o...

Despite a painful familiarity with filling out Scantron forms, I’ve never seen the machine they were fed into. This video shows how they work, how the answers were programmed, and dives into its internals.

If you just want to see the guts of it, skip to about 14:30